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Vishay General Semiconductor - Diodes Division SMCJ22CA-E3/57T
- Part No.:
- SMCJ22CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22CA-E3/57T.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:583
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Product details
Overview
SMCJ22CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 35.5 V maximum clamping voltage at 42.3 A peak pulse current. It features 22 V standoff voltage, 24.4–26.9 V breakdown voltage range at 1 mA test current, and operates across -55 °C to +150 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ22CA-E3/57T datasheet, SMCJ22CA-E3/57T pinout, SMCJ22CA-E3/57T application, or SMCJ22CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, 22 V working voltage, low thermal resistance (RθJL = 15 °C/W), and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
The SMCJ22CA-E3/57T implements a glass-passivated silicon avalanche junction optimized for fast transient response (<1 ps typical) and low incremental surge resistance. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, eliminating polarity-dependent design constraints in AC-coupled or floating signal paths.
Rated for 1500 W peak pulse power under 10/1000 µs waveform and derated above 25 °C ambient, it maintains stable clamping performance with 0.096 %/°C temperature coefficient of VBR. The device meets MSL Level 1 per J-STD-020 and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 22 V - Maximum continuous reverse operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 24.4–26.9 V at 1 mA - Confirmed avalanche conduction threshold with tight tolerance |
| Clamping Voltage (VC) | 35.5 V at 42.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 1500 W - Surge energy handling capacity under standardized transient waveform |
| Junction Temperature Range | -55 °C to +150 °C - Enables deployment in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
| Leakage Current (ID) | 1.0 µA max at 22 V - Ensures minimal standby power loss in high-impedance signal paths |
Pinout & Package
SMCJ22CA-E3/57T uses the SMC (DO-214AB) package: a surface-mount, molded plastic case with two coplanar terminals, UL 94 V-0 rated, and no polarity marking (bidirectional configuration). Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - interchangeable connection for AC or floating line protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) with margin |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs during transient events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility without dry-pack requirements |
| AEC-Q101 qualification path | HE3/HM3 variants support automotive-grade reliability validation for engine control and ADAS modules |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 12 V/24 V power rails feeding body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤35.5 V during 100 ms load dump events, preventing latch-up or gate oxide damage in downstream FETs and regulators. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF), low-leakage transient suppressor bridging signal and ground. Use Value: Maintains signal integrity with <1 µA leakage at 22 V while clamping 8 kV contact ESD per IEC 61000-4-2 without distortion. |
| Telecom Line Interface | Consumer USB Power Delivery |
|
Use Scenario: Secondary protection on Ethernet PHY or RS-485 transceiver bus lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt clamp coordinated with primary GDT or polymer PTC devices. Use Value: Responds within picoseconds to limit induced common-mode transients to safe levels before transceiver input stages saturate or fail. |
Use Scenario: Overvoltage safeguard on VBUS lines in USB-C PD sink applications where adapter faults may exceed 20 V. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing fault energy between connector and buck converter input. Use Value: Clamps sustained overvoltage to 35.5 V, allowing time for system-level fault detection and graceful shutdown before thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC22CA-13-F (Diodes Inc.) | Same 22 V VWM, 35.5 V VC, but lower 1000 W PPPM; SOD-123FL package (smaller, higher RθJA) | Limited to lower-energy surges; unsuitable for load dump or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD only |
| 1.5KE22CA (ON Semi) | Through-hole DO-201 package; identical 22 V VWM, 35.5 V VC, 1500 W rating; higher RθJA (60 °C/W) | Requires through-hole assembly; less suitable for high-density SMT designs or automated production | Choose for legacy through-hole systems or where thermal mass of lead-frame improves long-duration surge handling |
Compared with SAC22CA-13-F and 1.5KE22CA, the SMCJ22CA-E3/57T delivers identical clamping performance in a RoHS-compliant, MSL Level 1 SMC package optimized for high-volume SMT manufacturing, automotive qualification pathways, and thermal performance (RθJL = 15 °C/W).
Availability
SMCJ22CA-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom line protection, and consumer USB PD systems requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for SMCJ22CA-E3/57T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness against load dump, ESD, and lightning-induced surges is critical.
FAQ
What is the clamping voltage of SMCJ22CA-E3/57T at its rated peak pulse current?
The SMCJ22CA-E3/57T has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 42.3 A under the standard 10/1000 µs waveform. This value is measured and guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88394), ensuring predictable overvoltage limiting for protected circuits. The SMCJ22CA-E3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ22CA-E3/57T suitable for automotive applications?
The SMCJ22CA-E3/57T itself is commercial-grade (E3 suffix), but Vishay offers AEC-Q101 qualified versions under HE3/HM3 suffixes (e.g., SMCJ22CAHE3_A/H). While the SMCJ22CA-E3/57T shares identical electrical specs and SMC package construction, formal automotive qualification requires the HE3 variant. Engineers deploying the SMCJ22CA-E3/57T in automotive prototypes should verify qualification status with Vishay documentation before final design release.
How does the bidirectional nature of SMCJ22CA-E3/57T affect PCB layout?
The SMCJ22CA-E3/57T has no polarity marking and symmetrical electrical behavior in both directions, so PCB layout requires no orientation alignment-either terminal may connect to line or return. This simplifies routing in differential pairs, AC-coupled interfaces, or floating grounds. Layout best practices still apply: short traces, symmetric copper pour, and direct connection to chassis or power plane ground to minimize inductance and preserve clamping speed.
What is the thermal resistance from junction to lead (RθJL) for SMCJ22CA-E3/57T?
The SMCJ22CA-E3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as specified in Vishay's datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper pads via the SMC package leads, supporting reliable operation under repeated surge conditions. For thermal design, this parameter must be combined with PCB pad area (minimum 8.0 mm × 8.0 mm per terminal) to estimate actual junction temperature rise.
Can SMCJ22CA-E3/57T replace unidirectional SMCJ22A-E3/57T in an existing design?
No-SMCJ22CA-E3/57T is bidirectional and lacks polarity marking, whereas SMCJ22A-E3/57T is unidirectional with cathode band identification. Substituting them without circuit review risks incorrect biasing in DC-coupled paths, potentially causing leakage or failure to clamp. If bidirectional protection is required, redesign must confirm that both polarities of the protected node remain within safe voltage limits during normal operation and transients. The SMCJ22CA-E3/57T is not a drop-in replacement for SMCJ22A-E3/57T.
SMCJ22CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ22CA-E3/57T FAQ
1.How can I place an order for SMCJ22CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22CA-E3/57T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCJ22CA-E3/57T reliable?
The price and inventory of SMCJ22CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ22CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22CA-E3/57T?
SMCJ22CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22CA-E3/57T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCJ22CA-E3/57T?
For technical support, including SMCJ22CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ22CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ22CA-E3/57T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCJ22CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ22CA-E3/57T?
All SMCJ22CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22CA-E3/57T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCJ22CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ22CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ22CA-E3/57T Tags
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